While these files are internally ZIP archives and can be viewed with tools like 7-Zip or WinZip , users strongly recommend using the official Retrieve function within the Siemens TIA Portal to avoid file corruption.
The "ZA15" (or .zap15) file is the industry standard for bundling complex industrial automation projects into a single, compressed package. Download ZA15 zip
Below is a review based on common user experiences with these "zipped" automation projects and the tools used to manage them. While these files are internally ZIP archives and
A common hurdle is version compatibility. Because the "15" in the extension signifies TIA Portal version 15, you generally need that specific version (or newer) to "Retrieve" and open the project. Opening a v15 file in v17, for instance, requires a conversion process that can sometimes be tedious. A common hurdle is version compatibility
It effectively compresses massive project data—including PLC code, HMI screens, and hardware configurations—into a manageable single file. This makes it significantly easier to share or archive complete automation systems without losing individual file links.
